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This document provides information about the PfRv3 Probe Reduction feature that allows reducing traffic probe on channels that do not carrying any traffic.
Feature Name |
Releases |
Feature Information |
---|---|---|
PfRv3 Probe Reduction |
15.6(3)M Cisco IOS XE Denali 16.3.1 |
This document provides information about the PfRv3 Probe Reduction feature that allows reducing traffic probe on channels that do not carrying any traffic. The following command was introduced: smart-probes burst |
The PfRv3 Probe Reduction feature allows reducing traffic probe on channels that do not carry any traffic. Probing is used to compute important metrics such as reachability, one-way delay (OWD), jitter, and loss on channels that do not have user traffic. It helps PfRv3 algorithm to choose the best channel to use for a given traffic class.
A domain level parameter is defined to store the probing information. You need to store two sets of parameters; general monitor and quick monitor. In other words, one can specify the number of packets to be sent in a probe burst and the interval between such bursts.
Smart probe are of three types:
Active Channel Probe—Active channel probe is sent out to measure network delay if no probe is sent out for past 10 seconds interval.
Unreachable Probe—Unreachable probe is used to detect channel reachability when there is no traffic send out.
Burst Probe—Burst probes are used to calculate delay, loss, jitter on a channel that is not carrying active user traffic.
You can perform this task on a hub master or a border device.
1.
enable
2.
configure
terminal
3.
domain
default
4.
Do one of the
following:
5.
advanced
6.
smart-probes burst [quick] number-of-packets
packets every
interval
seconds
1.
show domain {default | domain-name} [vrf
vrf-name] {master | border} status
Use this command to verify the configuration. Example: Router# show domain default vrf green master status Smart Probe Profile: General Monitor: Current Provision Level: Master Hub Master Hub: Packets per burst: 10 Interval(secs): 20 Quick Monitor: Current Provision Level: Master Hub Master Hub: Packets per burst: 10 Interval(secs): 1 Smart Probe Inter-Packet Gap (ms) : 16 Smart Probe Timer Wheel Granularity (ms): 8 |
domain default master hub advanced smart-probe burst 10 packets every 20 seconds smart-probe burst quick 10 packets every 1 seconds
Related Topic |
Document Title |
---|---|
Cisco IOS commands |
|
Performance Routing Version 3 commands |